Coating machine



March 22, 1932. c. T. HATCH COATING MACHINE Filed Se pt 15, 1928 4 Sheets-Sheet 1 R 0 h 5 0 T I w J 6 m k f r Y 3 March 22, 1932. c. T. HATCH 1,850,837

COATING MACHINE Filed Sept. 15, 1928 4 Sheets-Sheet 2 \Q Q Q N N N INVENTOR Mmkzz, 1932..

C. T. HATCH COATING MACHINE Filed Sept. 15. 1928 4 Sheets-Sheet 3 INVENTOR mar/a5 //0/'cfi March 22, 1932. c T HATCH 1,850,837

COATING MACHINE Filed Sept. 15, 1928 4 Sheets-Sheet 4 PatentediMar; 22, :1932 1.

ime cl rics-j dHAnLEs nHATc 'orpamaron, MICHIGAN, Asst anon To union: sainnnrnonuo'rs "COMB-ANY, F ALBION, MICHIGAN" I COATING MACHINE Applicationfikd September 15,192s.. Serial m. s0s;252.-

fTh main object; baths invention isto provide a ,coatingqmachine which 1s well adapted for the greasing of baking pans, the

same being adapted to handle large pans. and effectively coatthe same without injury to or distortion of thepans. i

A further object is to provide a machine ofthis character which is automatic in its operation. a

Objects relating to details and economies ofmy inventionwill appear from the dei scription to follow; Theinventionis defined and pointed out in the claims.

A structure whichis apreferred embodi ment of my invention is illustrated in the accompanying drawings in; Which: Fig.1 is a rear perspective view of my improved coating machine.

Fig. 2 is a fragmentary plan views Fig. 3; isa detail view mainly in vertical section on line 33 of Figs. '1, 2 and 4.

Fig. 4 is a detail view partially in trans verse section on line 44 of Figs. 221ml 3. Fig.5 isadetailjview partially in vertical section'on line55 ofFig. 6.

. F1g. 6 isa fragmentary 'view partially in section on line 66-0f Fig. 2.

V intakes5 depending into thetank. i

Fig; 7 is ,an. enlarged detail section on line 7+7 of Fig. s

Fig. 8 isa .detailsection correspondinglto that of F 1g.,5 of a modified form orembodiment of my pan reversmgmeansp In the drawings similar' reference characxters refer to similar parts through the several views; 7 v p v Referring to. the drawlngs, Igprovide a housing 1 of such dimensions as to enclose most of the operating parts. Within this housing I mount a tankfor the coating material such as lard,a heatingwco-il 3 being provided for the tank.

sprayanozzles 4, these nozzles having-liquid I Thenozzles 4 are adjustably mounted on a rod 6 so that their spacing may be regulated. An air pipe 7 is connected to the nozzles by means ofthe flexible conduit 8. Theseconduits are veyor chains. I

or; air {delivered regulated. The connection for this pipe 7 to the supply tank 10 is controlled by the valve 11, A pressure regulating valve 12 is arranged in this connection-e seeFig."2. I

The details of the driving connectionirom themotor 13 to the compressorform nopart of this invention. i

I provide a conveyor for conveying pans I openings 19 to the tank.

The conveyor chains 20 are supported by sprockets 21 and 22011 the. shafts 23 and 24 respectivelyflheseshafts being arranged at the end of the, conveyor 'Way so. that the upper reach, of the sprocket chains are in a horizontal position, these being supported by the1tracks25 disposed at the sides of the The flights26 are'secur-ed to the conveyor chains in suitablyjspaced vrelation to extend 1 across the conveyor way. The tracks 25 sup port the conveyor chains so 'that the flights do notslide upontthe conveyor Waybut: are

' carried along above'it. Guide sprockets 27 are provided forthe lower reachof the con- The shaft 24 is provided with suitable driving connections to the motor.

As the pans are carried along above the spraying apparatus the valve ll is opened Within the tank, Ijmount apluralityof.

the roller 28 on the arm 29 of the rockshaft' 30 disposed above the spraying apparatus. Thisrocksha ft has an arm 31 connected by the'linkBQ to the valve lever or arm '33 so that the valve is opened as the forward edge passes the spray nozzles.

of the chain passes'over the spray nozzles and held open 1 until the rear edge "of the pan.100

38 which is pivoted at 381 to receive the pans in an inverted position. This reversing member discharges the pans in an upright position to the discharge-conveyor 39.

To actuate and time the reversing member, I provide a heart-shaped grooved cam 40 which is mounted on a shaft 41 connected by the gears 42 and 43 to the driven conveyor shaft 24.

The bell crank lever 44 is pivoted at 45, one arm being provided with a roller 46 engaging the cam, the other being connected by the link 47 to the reversing member.

In the modification shown in Fig. 8, the reversing member 48 is pivoted at 49 and connected by the link50 to the arm 51 pivoted at 52 on the frame so that the arm is engaged by the flights of the conveyor and the reversing member thereby actuated to reverse the pans and discharge them in upright position onthe discharge conveyor.

My improved coating machine is of very large capacity and capable of handling large pans with a minimum of effort and handling on the part of the operator.

The structure is also economical in the matter of coating material as the spraying apparatus is in action only while the pans are in position to be coated.

I have illustrated and described my improvements in an embodiment which I have found very satisfactory. I have not attempted to illustrate and describe other adaptations or embodiments as it is believed this disclosure will enable those skilled in the art to embody or adapt my improvements as'may be desired.

Having thus described my invention, what I'claim as new and desire to secure by Letters Patent, is:

1. In a coating machine-the combination with a tank, of a plurality of spray nozzles mounted within and provided with liquid intakes depending into said tank, an air-supply valve for said nozzles. a conveyor comprising a plate-like way member constituting a top for said tank and having openings therein "above said spray nozzles, grid-like receiving and discharge conveyor way members disposed at the front and rear of said tank, a drain board disposed below the discharge memberof said conveyor way and delivering veyor way, supporting tracks for the up er reaches of said chains whereby said flig its are supported out of contact with said conveyor way, a rockshaft disposed transverse- 1y above said conveyor, an arm on said rockshaft adapted to be engaged by a pan carried along said conveyor way by said conveyor flights, said flights being notched to receive said arm, and operating connections from said .rockshaftto said supply valve.

2. In a coating machine, the combination with a tank, of a plurality of spray nozzles mounted within and provided with liquid intakes dependinginto said tank, an air supply valve for said nozzles, a conveyor way constituting a top for said tank and having open ings therein above said spray nozzles, sprocket chains and coacting sprockets, bar-like flights secured to said sprocket chainsto extend across'said conveyor way, supporting tracks for the upper reaches of said chains whereby said flights are supported out of contact with said conveyor way, a rockshaft disposed transversely above said conveyor, an arm on said rockshaft adapted to be engaged by a pan carried along said'conveyor way by said conveyor flights, said flights'being notched to receive said arm, and operat' ing connections from said rockshaft to said supply valve.

3. In a coating machine, the combination with a tank, ofa plurality of spray nozzles provided with liquid intakes depending into said tank, an air supply valve for said nozzles, a conveyor way member constituting a top for said tank and having openings therein above, said spray nozzles, a grid-like discharge way member disposed at the rear of said tank, a pair of sprocket chains and coacting sprockets, flights secured to said sprocket chains to extendacross the conveyor way, and means for operating said air valve comprising an arm positioned to be engaged by pans as they are carried along said conveyor way, said flights being notched to receive said arm whereby the valve is actuated only by the pans.

'4. In a coatingmachine, the combination with a tank, of a plurality of spray nozzles provided with liquid'intakes depending into said tank, an air supply valve for said nozzles, a conveyor way member constituting a top for said tank and having openings therein above said spray nozzles, a grid-like discharge way membcr disposed at the rear of said tank. a pair of sprocket chains and coacting sprockets. flights secured to said sprocket chains to extend across the conveyor way, and means for operating said air valve comprising an arm positioned to be engaged by pans as they are carried along said conveyor way. i

5. Ina coating machine, the combination with a tank, of a plurality of spray nozzles provided with liquid intakes depending into said tank, an air supplyvalve for said nozzles, aconveyorwaymember constituting a top for said tank and having openings therein I above said spray nozzles, a grid-like discharge way member disposed at therear'of said tank, a drain boarddisposedfbelow the discharge member of said conveyor way and delivering to said tank, apair of sprocket chains and coacting sprockets, flights secured a ,to'said sprocket chains to extend across the conveyor way, and means for operating said air valve comprising an arm positioned to be engaged by pans as they are carriedalong said conveyor way.

with a tank, of a plurality of spraynozzles mounted within and provided with liquid intakes depending-into said tank, an air sup ply valve :for said nozzles, a conveyor way zolektending over said tank, a drain board disposed below the rear portion of said conveyor way and .deliveringto said tank, sprocket chains and coacting sprockets, pan propelling flights onsaid sprocketchains, a rockshaft 2 disposed transversely. above said conveyor,

an arm on said rockshaft positioned to be engagedby a pan carried along said conveyor way by said conveyor flights, and operating connections from said rockshaft to said air actuation 1s timed.

supply valve. I

7. In a structure ofthe class described,fthe

combination with a tank, of a spraying ape -by the pans discharged from said 'coati'ng' conveyor to said reversing member are automatically inverted thereby and delivered to said discharge conveyor in upright posi-' tion.

Y 8. In a structure of the class described, the combination of a spraying apparatus, a coating conveyor for conveying pans in an mverted position across said spraying apparatus, a V

discharge conveyor, a pivotally mounted reversing member to whichthe pans are delivered in an inverted position from said coatingconveyor, a cam having driving connections to said coating conveyor, a 'bell crank lever,.one arm of which is operatively associated with said cam, and a link connecting the otherarm of said lever to said reversing member whereby the pans discharged from said coatingconveyor to said reversing member are automatically] invert- 6. Ina coating machine, the combination verted position across said tank, a discharge ed thereby and deliveredto said discharge.

conveyor in uprightposition. I

9. In a structure of the class described, the combination of a spraying apparatus, a coatingconveyor'for conveying pans in an inverted position acrossfsaid spraying apparatus, a pivotally mounted reversing member to which the pans are delivered in an inverted position from said coating conveyor, a cam havingdriving connections to said coating conv'eyor, a bell crank lever, one arm of which is operatively associated with said cam, and

a linkconnecting the other arm of said lever to said reversing member whereby the pans discharged from said coating conveyor'to said reversing member are automatically inverted. 1 I

10.1 In a structure ofthe class described,

the combination with a tank,iof a spraying.

apparatus disposed within said tank, a driven coatingconveyor for conveying pans in an inverted position across said tank, a discharge conveyor, an Lshaped reversing member to which the pans are delivered in an inverted position from said coating conveyor pivotally mounted at the rear thereof to discharge to said discharge conveyor,-and meansfor actuating said reversing member on its pivot driven by said coating conveyor whereby 1ts 11,111 astructure of the class described, the combination of a spraying apparatus, a drivencoating conveyor for conveying pans in an inverted position across said spray ing apparatus, adischarge conveyor, a movably mounted reversing member 'to which the pans are, delivered in an inverted position fromsald coatmgconveyor to discharge to said discharge conveyor, and means -for actu .ating said reversing member driven by said coating conveyor. i

12.. In a structure of they class described," the combinationof a spraying apparatus, a driven coating conveyor for conveying pans in an inverted position across said spraying apparatus, a movably mounted reversing member to which the pans are delivered in.

an inverted position from said coating con veyor, and means for actuating said reversing member driven by said coatingconveyor;

In'witness whereof I have hereunto set my hands. I r

" CHARLES T. HATCH. 

